Blue Hour palette
Nightfall Moor
From #00659c ink through #3690cd, #55aceb, #74bcf1 to #a4d7ff light, Nightfall Moor is a analogous progression that holds together at any size. Use it for event posters that compete with a wall of other posters. The darkest and lightest stops clear AA for large text.
skybluehourfive-stop
#00659c
#3690cd
#55aceb
#74bcf1
#a4d7ff
The generator opens with #00659c as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.